PUMP GP- 1403661 - Caterpillar

Motor Grader ( 61S)Description of Change: A new flywheel clutch group with three discs instead of two is used in 140B Motor Graders (61S). Because the new clutch group has one more disc than the former group, it has a higher load capacity and increased service life. With the former group, it was possible for the clutch to slide a small amount under heavy loads. This caused the clutch to become hot and decreased service life.Adaptable As: The new 2Y6820 Flywheel Clutch Group is a direct replacement for the former 6D1590 Flywheel Clutch Group. See Special Instruction, "Installing Flywheel Clutch Groups On Direct Drive Motor Graders," Form SMHS7317-01 for the installation procedure.